Cisco MDS SanOS Troubleshooting Guide -- Managing Storage Services Modules

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This chapter describes how to manage the Storage Services Module (SSM) and provides information about SSI images.

Contents



SSM Overview

The 32-port Fibre Channel Storage Services Module (SSM) for the Cisco MDS 9000 Family supports up to 32 Fibre Channel ports and provides distributed intelligent storage services.

Note Note: Cisco MDS 9500 Series switches running Cisco MDS SAN-OS Release 2.0(2b) or later support the SSM module.

The SSI image for the SSM is downloaded from the supervisor module. The image for an SSM can be specified using the SSI boot variable.

Note Note: The SSM can operate as a 32-port Fibre Channel switching module with the standard Cisco SAN-OS images for Release 2.1(2) or later. You need the SSI image if you use intelligent storage services.

The following table lists the features supported for the SSM:


Table 3-1 Cisco MDS SAN-OS Feature Support for the SSM.

Module Cisco MDS SAN-OS Release
2.0(1b) 2.0(2b), 2.0(3), 2.0(4), and 2.0(4a) 2.1(1a) 2.1(2) and later
SSM None Fibre Channel switching Fibre Channel switching Fibre Channel switching
Intelligent Storage Services Intelligent Storage Services Intelligent Storage Services
VSFN VSFN Nondisruptive upgrade for Fibre Channel switching traffic1

When you upgrade, or downgrade, the SSI boot image on an SSM, you might disrupt traffic through the module. The following table describes how updating the SSI boot image affects SSM traffic.


Table 3-2 SSI Boot Image Updating Affects on SSM Traffic

Cisco MDS SAN-OS Release Traffic Type Disrupts Traffic?

2.0(2b) through 2.1(1a)

All

Yes

2.1(2) and later

Layer 2 Fibre Channel switching only

No1

Both Layer 2 Fibre Channel switching and Layer 3 Intelligent Storage Services (such as FCWA, NASB, SANTap, and ISAPI virtualization)

Yes

Layer 3 Intelligent Storage Services (such as FCWA, NASB, SANTap, ISAPI virtualization) only

Yes

As shown in Table 3-2, Layer 3 Intelligent Storage Services traffic is disrupted when you update the SSI boot image. If you configure Layer 3 Intelligent Storage Services on your SSM, we recommend that you shut down these services before upgrading the SSI boot image. You can use dual fabric configuration to minimize the impact of shutting down Layer 3 services.

Initial Troubleshooting Checklist

Begin troubleshooting SSM issues by verifying that the following conditions are met:

Checklist

Check off

Verify that the SSI boot variable is set.

Verify that the SSI image is present and pointed to by the SSI boot variable.

Verify that the EPLD version is 2.1(2) or later for nondisruptive layer-2 upgrades.

Verify that you have configured all SSM ports prior to upgrading to Cisco SAN-OS Release 3.0(1) or later. Do not use port mode auto.

Verify that you have the appropriate licensing. The SSM can operate as a 32-port Fibre Channel switching module with no additional licensing requirements. The SSM requires the Storage Services Enabler package to provision intelligent storage services on the module.

Common Troubleshooting Tools in Fabric Manager

The following navigation paths may be useful in troubleshooting SSM issues using Fabric Manager:

  • In Fabric Manager, choose End Devices > SSM to access the SSM configuration.
  • In Device Manager, choose Physical > Inventory to determine the SSI image version.

Common Troubleshooting Commands in the CLI

The following commands may be useful in troubleshooting PortChannel and trunking issues:

  • show boot-variables
  • show version
  • install ssi
  • show version module number epld
  • show version epld
  • show ssm provisioning

SSM Issues

This section describes troubleshooting issues for the SSM and SSI images.

SSM Fails to Boot

If the SSM fails to boot, you may see the following system message:

Error Message IMAGE_DNLD-SLOT#-2-ADDON_IMG_DNLD_FAILED: Module image download

process failed. [chars].

Explanation The add-on image download to the module failed. This module is not operational until an add-on image has been successfully installed.
Recommended Action Verify the location and version of your module image. Enter install module CLI command or use a similar Fabric Manager/Device Manager procedure to download a new module image.
Symptom SSM fails to boot.


Table 3-3 SSM Fails to Boot

Symptom

Possible Cause

Solution

SSM fails to boot.

SSI boot variable is not set.

Set the boot variable and install the SSI image. See the "Recovering a Replacement SSM" section.

SSI image is not present.

Download the SSI image and install. See the "Upgrading the SSI Image" section.

SSI image is not compatible with Cisco SAN-OS image.

If an incorrect or incompatible SSI image is downloaded to an SSM it fails to boot three times and is then powered down. Refer to the Cisco MDS SAN-OS Release Compatibility Matrix for Storage Service Interface Images at the following website to check image compatibility: http://www.cisco.com/en/US/products/ps5989/products_device_support_table09186a0080485272.html. See the "Upgrading the SSI Image" section.

Upgrading the SSI Image

You can specify the SSI boot image for a Storage Services Module (SSM) to configure Fibre Channel switching and Intelligent Storage Services.

Note Note: A newly installed SSM initially operates in Fibre Channel switching mode by default.
Note Note: If you downgrade to a Cisco MDS SAN-OS release that does not support the SSM, you must power down the module. The boot variables for the SSM are lost.

To upgrade or downgrade the SSI boot image for SSM modules using the CLI, follow these steps:


  1. Verify that the correct SSI boot image is present on your switch (see the "Verifying the SSI Boot Image" section).
  2. Use the install ssi command to upgrade or downgrade the SSI boot image on the module (see the "Using the install ssi Command" section).

Note Note: The SSM must be running EPLD version 2.1(2) to use the install ssi command. You must install the SSM on a Cisco MDS 9500 Series switch to upgrade the EPLD. See the "Installing EPLD Images on Modules" section.

Verifying the SSI Boot Image

To verify that you have the correct Cisco MDS SAN-OS release and SSI boot image file on your switch, follow these steps:


1. Log in to the switch through the console port, an SSH session, or a Telnet session. 2. If your SSM module boots, use the dir modflash://slot-1/ command to verify that the SSI software image file corresponding to your Cisco MDS SAN-OS release is present on the SSM. For example, if your switch is running Cisco MDS SAN-OS Release 2.1(2), you must have m9000-ek9-ssi-mz.2.1.2.bin in bootflash: or slot0: on the active supervisor module. Refer to the Cisco MDS SAN-OS Release Compatibility Matrix for Storage Service Interface Images at the following URL for more information: Cisco MDS SAN-PS Release Compatibility Matrix

 switch# dir modflash://4-1/ 
 4004128 Sep 26 13:43:02 2005 m9000-ek9-ssi-mz.2.1.2.bin
 ...
You can find the SSI boot images at the following URL:
SSI Boot Images

3. If your SSM module does not boot, you need to check for the SSI image in bootflash instead of modflash: use the dir bootflash://slot-1/ command to verify that the SSI software image file corresponding to your Cisco MDS SAN-OS release is present on the SSM. For example, if your switch is running Cisco MDS SAN-OS Release 2.1(2), you must have m9000-ek9-ssi-mz.2.1.2.bin in bootflash: or slot0: on the active supervisor module.

switch# dir bootflash:
40295206     Aug 05 15:23:51 1980  ilc1.bin
12456448     Jul 30 23:05:28 1980  kickstart-image1
12288        Jun 23 14:58:44 1980  lost+found/
27602159     Jul 30 23:05:16 1980  system-image1
12447232     Aug 05 15:08:30 1980  kickstart-image2
28364853     Aug 05 15:11:57 1980  system-image2
4004128      Sep 26 13:43:02 2005 m9000-ek9-ssi-mz.2.1.2.bin

4. If you need to obtain the appropriate SSI software image file, follow these steps:

a. Download the SSI software image file from Cisco.com to your FTP server.
b. If your SSM boots, then verify that you have enough free space available on the modflash: on the SSM using the dir modflash://slot-1/ command. The download site on Cisco.com shows the size of the boot image file in bytes.
The following example shows how to display the available memory for the modflash: for the SSM in slot 4:
switch# dir modflash://4-1/
3118535 Apr 25 15:35:06 2005 m9000-ek9-ssi-mz.2.0.4a.bin 
...
c. If your SSM does not boot, then verify that you have enough free space available on the bootflash: on the active supervisor module using the dir bootlash://slot-1/ command. The download site on Cisco.com shows the size of the boot image file in bytes.
The following example shows how to display the available memory for the modflash: for the SSM in slot 4:
 switch# dir bootflash:
 40295206     Aug 05 15:23:51 1980  ilc1.bin
 12456448     Jul 30 23:05:28 1980  kickstart-image1
 12288        Jun 23 14:58:44 1980  lost+found/
 27602159     Jul 30 23:05:16 1980  system-image1
 12447232     Aug 05 15:08:30 1980  kickstart-image2
 28364853     Aug 05 15:11:57 1980  system-image2
 4004128      Sep 26 13:43:02 2005 m9000-ek9-ssi-mz.2.1.2.bin
 ...
d. Delete the unneeded files from modflash or bootflash if there is not enough space.
 switch# '''delete modflash://4-1/m9500-ek9-ssi-mz.2.0.4a.bin'''
e. Copy the boot image file from the FTP server to modflash or bootflash.
switch# '''copy ftp://10.1.7.2/m9000-ek9-ssi-mz.2.1.2.bin modflash://4-1/m9000-ek9-ssi-mz.2.1.2.bin'''
Note Note: If you are using bootflash to initially boot your SSM, you should copy the SSI image to modflash after the SSM boots and set the SSI boot variable to use the image in modflash.

Using the install ssi Command

Use the install ssi command to update the boot image on an SSM. If the SSM is performing Fibre Channel switching and no Intelligent Storage Services are provisioned on the module, this operation does not disrupt traffic through the module. If the SSM is configured for Intelligent Storage Services, a warning displays at the command prompt indicating that the operation will disrupt traffic and you are then asked if you wish to continue.

Note Note: The SSM must be running EPLD version 2.1(2) to use the install ssi command. You must install the SSM on a Cisco MDS 9500 Series switch to update the EPLD. See the "Installing EPLD Images on Modules" section.

To upgrade or downgrade the SSM boot image for Intelligent Storage Services, follow these steps:


1. Log in to the switch through the console port, an SSH session, or a Telnet session.
2. Verify that the SSM is physically installed in the switch. If the module is not physically installed, insert it into the desired slot. Issue a show module command to verify the status of the module.

switch# show module
Mod  Ports  Module-Type                      Model              Status
---  -----  -------------------------------- ------------------ ------------
4    32     Storage Services Module          DS-X9032-SSM       ok
5    0      Supervisor/Fabric-1              DS-X9530-SF1-K9    active *
6    0      Supervisor/Fabric-1              DS-X9530-SF1-K9    ha-standby
...
Note Note: the slot number for later reference.

3. Verify the Cisco MDS SAN-OS release that is running on the switch and verify the location and name of the SSI boot image that is on the switch by following the procedure described in the "Verifying the SSI Boot Image" section.
4. If the SSM boots, then install the SSI image on the SSM.

switch# install ssi modflash://4-1/m9000-ek9-ssi-mz.2.1.2.bin module 4
Note Note: If the SSM is configured for Layer 3 Fibre Channel switching or Intelligent Storage Services, a warning displays at the command prompt indicating that the operation will disrupt traffic and you are then asked if you wish to continue.

5. If the SSM does not boot, install the SSI image in bootflash on the active supervisor module.

switch# install ssi bootflash:/m9000-ek9-ssi-mz.2.1.2.bin module 4
Note Note: If the SSM is configured for Layer 3 Fibre Channel switching or Intelligent Storage Services, a warning displays at the command prompt indicating that the operation will disrupt traffic and you are then asked if you wish to continue.

6. Install the SSI image on the SSM.

switch# install ssi modflash://4-1/m9000-ek9-ssi-mz.2.1.2.bin module 4
Note Note: If the SSM is configured for Layer 3 Fibre Channel switching or Intelligent Storage Services, a warning displays at the command prompt indicating that the operation will disrupt traffic and you are then asked if you wish to continue.

7. Issue the show boot command to display the current contents of the image boot variable for the SSM.

switch# show boot 
sup-1
kickstart variable = bootflash:/boot-2-0-1-9
system variable = 
bootflash:/isan-2-0-1-9;bootflash:/isan-2-0-0-181b;bootflash:/isan-2-0-0-181b
sup-2
kickstart variable = bootflash:/boot-2-0-1-9
system variable = 
bootflash:/isan-2-0-1-9;bootflash:/isan-2-0-0-181b;bootflash:/isan-2-0-0-181b
Module 4
ssi variable = modflash://4-1/m9000-ek9-ssi-mz.2.1.2.bin

8. Save the new boot variable configuration so that the new boot image is used when the switch reboots.

switch# copy running-config startup-config 
Note Note: If you do not save this configuration, it is lost when the switch reboots. In addition, SSM restarts in Fibre Channel switching mode. You must perform this procedure again to recover the SSI boot image configuration.

9. Issue the show module command to verify the status of the SSM.

switch# show module
Mod  Ports  Module-Type                      Model              Status
---  -----  -------------------------------- ------------------ ------------
4    32     Storage Services Module          DS-X9032-SSM       ok
5    0      Supervisor/Fabric-1              DS-X9530-SF1-K9    active *
6    0      Supervisor/Fabric-1              DS-X9530-SF1-K9    ha-standby
<br>
Mod  Sw           Hw      World-Wide-Name(s) (WWN)
---  -----------  ------  --------------------------------------------------
4    2.1(2)       0.30    20:c1:00:05:30:00:06:de to 20:e0:00:05:30:00:06:de
5    2.1(2)       4.0     --
6    2.1(2)       4.0     --
<br>
Mod      Application Image Description       Application Image Version
-------- -----------------------------       -------------------------
4        SSI linecard image                  2.1(2)
Mod  MAC-Address(es)                         Serial-Num
---  --------------------------------------  ----------
4    00-05-30-00-9e-b2 to 00-05-30-00-9e-b6  JAB06480590
5    00-0e-38-c6-2c-6c to 00-0e-38-c6-2c-70  JAB082504MQ
6    00-0f-34-94-4d-34 to 00-0f-34-94-4d-38  JAB083407D3
* this terminal session

Recovering a Replacement SSM

SSM Upgrade Is Disruptive

Installing EPLD Images on Modules


Back to Main Page: Cisco MDS SAN-OS Troubleshooting Guide

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